Log message:
Update MASTER_SITES and HOMEPAGE with Oracle's one.

Log message:
Remove @dirrm entries from PLISTs

Log message:
* Fix a typo in patch-aa.
* Fix build with xerces-c 2.8.0.

Log message:
Simply and speed up buildlink3.mk files and processing.
This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.

Log message:
This version of bdb-xml requires db<4.7.  Depend on db46 instead of db4.
This fixes the build error shown on Joerg's bulk builds on NetBSD-current.

Bump PKGREVISION.

Log message:
Recursive PKGREVISION/ABI-depends bump for db4 4.6->4.7 update (shlib
name change).

Log message:
No idea what __os_clock is, but replace it with portable gettimeofday
usage. Add DESTDIR support. Bump revision.

Log message:
db4 update related revision bump

Log message:
PKGREVISION bump for db4 shlib name change.

Log message:
Added "c" to USE_LANGUAGES for packages that use GNU configure scripts,
since they always need a C compiler, even when the source code is
completely in C++.

For some other packages, stated in the comment that a C compiler is
really not needed.